<template>
  <button class="bubbly-button" :class="activeClass ==true?'animate':''" @click="gethome()">
    <slot></slot>
  </button>
</template>
<script lang="ts">
import { defineComponent, ref } from 'vue'
export default defineComponent({
  name: 'Tao-btn',
  setup() {
    let activeClass = ref(false)
    const gethome = () => {
      //添加时间延时，可以消除点击按钮时的伪元素
      setTimeout(() => {
        activeClass.value = true
      }, 200)
    }

    return {
      activeClass,
      gethome,
    }
  },
})
</script>
<style lang="scss" scoped>
.bubbly-button {
  width: 5rem;
  height: 2rem;
  color: #fff;
  background: linear-gradient(90deg, blue, #5d5de9);
  border-radius: 2rem;
  border: none;
  cursor: pointer;
  position: relative;
  transition: transform ease-in 0.1s, box-shadow ease-in 0.25s;
  //box-shadow: 0 2px 25px rgba(255, 0, 130, 0.5);
}
.bubbly-button:focus {
  outline: 0;
}
.bubbly-button:before,
.bubbly-button:after {
  position: absolute;
  content: '';
  display: block;
  width: 140%;
  height: 100%;
  left: -20%;
  z-index: -1000;
  transition: all ease-in-out 0.5s;
  background-repeat: no-repeat;
}
.bubbly-button:before {
  display: none;
  top: -75%;
  background-image: radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, transparent 20%, #ff0081 20%, transparent 30%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, transparent 10%, #ff0081 15%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%);
  background-size: 10% 10%, 20% 20%, 15% 15%, 20% 20%, 18% 18%, 10% 10%, 15% 15%, 10% 10%, 18% 18%;
}
.bubbly-button:after {
  display: none;
  bottom: -75%;
  background-image: radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, transparent 10%, #ff0081 15%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%),
    radial-gradient(circle, #ff0081 20%, transparent 20%);
  background-size: 15% 15%, 20% 20%, 18% 18%, 20% 20%, 15% 15%, 10% 10%, 20% 20%;
}
.bubbly-button:active {
  transform: scale(0.9);
  background-color: #e60074;
  //box-shadow: 0 2px 25px rgba(255, 0, 130, 0.2);
}
.animate:before {
  display: block;
  animation: topBubbles ease-in-out 0.75s forwards;
}
.animate:after {
  display: block;
  animation: bottomBubbles ease-in-out 0.75s forwards;
}

@keyframes topBubbles {
  0% {
    background-position: 5% 90%, 10% 90%, 10% 90%, 15% 90%, 25% 90%, 25% 90%, 40% 90%, 55% 90%,
      70% 90%;
  }
  50% {
    background-position: 0% 80%, 0% 20%, 10% 40%, 20% 0%, 30% 30%, 22% 50%, 50% 50%, 65% 20%,
      90% 30%;
  }
  100% {
    background-position: 0% 70%, 0% 10%, 10% 30%, 20% -10%, 30% 20%, 22% 40%, 50% 40%, 65% 10%,
      90% 20%;
    background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%;
  }
}
@keyframes bottomBubbles {
  0% {
    background-position: 10% -10%, 30% 10%, 55% -10%, 70% -10%, 85% -10%, 70% -10%, 70% 0%;
  }
  50% {
    background-position: 0% 80%, 20% 80%, 45% 60%, 60% 100%, 75% 70%, 95% 60%, 105% 0%;
  }
  100% {
    background-position: 0% 90%, 20% 90%, 45% 70%, 60% 110%, 75% 80%, 95% 70%, 110% 10%;
    background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%;
  }
}
</style>